Claude API & Agent SDK

Defaults

• Model: claude-opus-4-6 (unless user specifies otherwise)
• Thinking: thinking: {type: "adaptive"} for complex tasks (never budget_tokens — deprecated)
• Streaming: Default for large inputs, large outputs, or high max_tokens
• Streaming completion: Use .get_final_message() (Python) / .finalMessage() (TypeScript)

Language Detection

Infer language from project files. Support: Python, TypeScript/JavaScript, Java/Kotlin/Scala, Go, Ruby, C#, PHP, cURL. If multiple languages detected, clarify which is relevant.

Which Surface to Use